Granted Patent
Utility
US 6,421,655 · App. 09/326,254
Computer-based representations and reasoning methods for engaging users in goal-oriented conversations
Inventors:
Eric J. Horvitz, Timothy S. Paek
Patented Case
View Patent ↗
Granted: Jul 16, 2002
Filed: Jun 4, 1999
Inventors
Eric J. Horvitz
Timothy S. Paek
Assignee (at issue)
Microsoft Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.